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Finding the Fourth Proportional to 207.81, 286.65 and 134.00

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Solution

The fourth proportional to 207.81, 286.65 and 134.00 is: 184.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.81 : 286.65 = 134.00 : x
  2. Step 2: Convert to fraction form
    207.81/286.65 = 134.00/x
  3. Step 3: Cross multiply
    207.81x = 286.65 × 134.00
  4. Step 4: Simplify right side
    207.81x = 38,409.67
  5. Step 5: Solve for x
    x = 38,409.67/207.81
  6. Step 6: Final answer
    x = 184.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.